Essays about: "absorbing layer"

Showing result 1 - 5 of 13 essays containing the words absorbing layer.

  1. 1. Chemoreception of a Two-Dimensional Cell with Multilayer Diffusion

    University essay from Lunds universitet/Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Author : Steffi Schijf; [2023]
    Keywords : biophysics; chemoreception; receptors; multilayer diffusion; diffusion; Physics and Astronomy;

    Abstract : Previously, Berg and Purcell found an expression for the diffusion current of particles into a set of receptors in their paper Physics of Chemoreception. These receptors were assumed to be uniformly distributed on a spherical cell's surface and the receptors where idealized as circular patches. READ MORE

  3. 2. Numerical simulation of acoustic wave propagation with a focus on modeling sediment layers and large domains

    University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

    Author : Elias Estensen; [2022]
    Keywords : Helmholtz; wave equation; acoustics; ocean acoustics; numerical analysis; computational science; finite differences; summation by parts; sbp; waveholtz; cylindrical coordinates; sediment layers; interface; super-grid; super grid; absorbing layer; Helmholtz; vågekvationen; akustik; undervattensakustik; numerisk analys; beräkningsvetenskap; finita differenser; summation by parts; sbp; cylindriska koordinater; waveholtz; sedimentskikt; interface; super-grid; absorberande lager;

    Abstract : In this report, we study how finite differences can be used to simulate acoustic wave propagation originating from a point source in the ocean using the Helmholtz equation. How to model sediment layers and the vast size of the ocean is studied in particular. READ MORE

  4. 3. Alternative Architectures of Quantum Dot Solar Cells

    University essay from KTH/Tillämpad fysikalisk kemi

    Author : Astrid Bergman; [2021]
    Keywords : Quantum dots; Solar cells; PbS; Alternative architectures; electron transporting layer; Kvantprickar; solceller; PbS; alternativa arkitekturer; elektrontransportlager;

    Abstract : Kvantprickar är intressanta för tillverkning av solceller på grund av möjligheten att justera bandgapet beroende på kvantpricksstorleken. I detta examensarbete har alternativa arkitekturer av PbS kvantprickssolceller testats samt att påverkan av olika lager har utvärderats. READ MORE

  5. 4. Modular Sound Absorbing Unit : A system solution for implementation of noise abatement appliance in indoor environments

    University essay from Luleå tekniska universitet/Institutionen för ekonomi, teknik och samhälle

    Author : William Odevik; Viktor Wästersved Nyberg; [2020]
    Keywords : Noise; Sound Absorber; Modular; Novel Materials; Buller; Ljudabsorbent; Modulär; Okonventionellt Material;

    Abstract : There is a rising concern about the effects of noise on human health. The noise from our technologies and comforts that evokes a negative physiological response as a response, effects like cardiovascular disease, cognitive and hearing impairments are all examples of critical health results stemming from prolonged noise exposure (WHO, 2004 & 2018). READ MORE

  6. 5. Characterizing optical and electrical properties of monolayer MoS2 by backside absorbing layer microscopy

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Nathan Ullberg; [2020]
    Keywords : backside absorbing layer microscopy; BALM; monolayer MoS2; TMD; TMDC; 2D materials; nanomaterials; nanotechnology; refractive index; extinction coefficient; absorption coefficient; field-effect transistor; FET; semiconductors; optoelectronics; optics; raw image processing; chemical vapor deposition; CVD; in situ characterization;

    Abstract : Nanomaterials are playing an increasing role in novel technologies, and it is important to develop optical methods to characterize them in situ.  To that end, backside absorbing layer microscopy (BALM) has emerged as a powerful tool, being capable to resolve sub-nanometer height profiles, with video-rate acquisition speeds and a suitable geometry to couple live experiments. READ MORE